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-rw-r--r--gzlib.c40
1 files changed, 27 insertions, 13 deletions
diff --git a/gzlib.c b/gzlib.c
index ca55c6ea9265..fae202ef8905 100644
--- a/gzlib.c
+++ b/gzlib.c
@@ -1,5 +1,5 @@
/* gzlib.c -- zlib functions common to reading and writing gzip files
- * Copyright (C) 2004, 2010, 2011, 2012 Mark Adler
+ * Copyright (C) 2004, 2010, 2011, 2012, 2013 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
@@ -108,7 +108,7 @@ local gzFile gz_open(path, fd, mode)
return NULL;
/* allocate gzFile structure to return */
- state = malloc(sizeof(gz_state));
+ state = (gz_statep)malloc(sizeof(gz_state));
if (state == NULL)
return NULL;
state->size = 0; /* no buffers allocated yet */
@@ -162,8 +162,10 @@ local gzFile gz_open(path, fd, mode)
break;
case 'F':
state->strategy = Z_FIXED;
+ break;
case 'T':
state->direct = 1;
+ break;
default: /* could consider as an error, but just ignore */
;
}
@@ -194,8 +196,8 @@ local gzFile gz_open(path, fd, mode)
}
else
#endif
- len = strlen(path);
- state->path = malloc(len + 1);
+ len = strlen((const char *)path);
+ state->path = (char *)malloc(len + 1);
if (state->path == NULL) {
free(state);
return NULL;
@@ -208,7 +210,11 @@ local gzFile gz_open(path, fd, mode)
*(state->path) = 0;
else
#endif
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+ snprintf(state->path, len + 1, "%s", (const char *)path);
+#else
strcpy(state->path, path);
+#endif
/* compute the flags for open() */
oflag =
@@ -236,7 +242,7 @@ local gzFile gz_open(path, fd, mode)
#ifdef _WIN32
fd == -2 ? _wopen(path, oflag, 0666) :
#endif
- open(path, oflag, 0666));
+ open((const char *)path, oflag, 0666));
if (state->fd == -1) {
free(state->path);
free(state);
@@ -282,9 +288,13 @@ gzFile ZEXPORT gzdopen(fd, mode)
char *path; /* identifier for error messages */
gzFile gz;
- if (fd == -1 || (path = malloc(7 + 3 * sizeof(int))) == NULL)
+ if (fd == -1 || (path = (char *)malloc(7 + 3 * sizeof(int))) == NULL)
return NULL;
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+ snprintf(path, 7 + 3 * sizeof(int), "<fd:%d>", fd); /* for debugging */
+#else
sprintf(path, "<fd:%d>", fd); /* for debugging */
+#endif
gz = gz_open(path, fd, mode);
free(path);
return gz;
@@ -531,7 +541,8 @@ const char * ZEXPORT gzerror(file, errnum)
/* return error information */
if (errnum != NULL)
*errnum = state->err;
- return state->msg == NULL ? "" : state->msg;
+ return state->err == Z_MEM_ERROR ? "out of memory" :
+ (state->msg == NULL ? "" : state->msg);
}
/* -- see zlib.h -- */
@@ -582,21 +593,24 @@ void ZLIB_INTERNAL gz_error(state, err, msg)
if (msg == NULL)
return;
- /* for an out of memory error, save as static string */
- if (err == Z_MEM_ERROR) {
- state->msg = (char *)msg;
+ /* for an out of memory error, return literal string when requested */
+ if (err == Z_MEM_ERROR)
return;
- }
/* construct error message with path */
- if ((state->msg = malloc(strlen(state->path) + strlen(msg) + 3)) == NULL) {
+ if ((state->msg = (char *)malloc(strlen(state->path) + strlen(msg) + 3)) ==
+ NULL) {
state->err = Z_MEM_ERROR;
- state->msg = (char *)"out of memory";
return;
}
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+ snprintf(state->msg, strlen(state->path) + strlen(msg) + 3,
+ "%s%s%s", state->path, ": ", msg);
+#else
strcpy(state->msg, state->path);
strcat(state->msg, ": ");
strcat(state->msg, msg);
+#endif
return;
}